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arXiv 1011.2148hep-thhep-ph
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库仑规范中的鬼传播子

The ghost propagator in Coulomb gauge

P. Watson, H. Reinhardt

摘要:

我们目前的鬼传播库仑规范的数值研究结果,其中晶格结果的空间胶子传播被用作输入,以解决鬼戴森Schwinger方程。我们表明,为了完全解决,鬼方程必须补充的边界条件(逆鬼传播敷料功能在零动量的值),这决定了解决方案是临界(零值的边界条件)或亚临界(有限值)。不同的解决方案表现出一个特征行为,其中所有的曲线遵循相同的(临界)解决方案时,从高到低的动量,直到“被迫”冻结在红外线的边界条件的值。边界条件可以解释的Gribov规范固定的模糊性,我们也证明了这是不连接到重整化。此外,时间胶子传播子和红外奴役图片禁闭的连接进行了讨论。

英文摘要:

We present results for a numerical study of the ghost propagator in Coulomb gauge whereby lattice results for the spatial gluon propagator are used as input to solving the ghost Dyson-Schwinger equation. We show that in order to solve completely, the ghost equation must be supplemented by a boundary condition (the value of the inverse ghost propagator dressing function at zero momentum) which determines if the solution is critical (zero value for the boundary condition) or subcritical (finite value). The various solutions exhibit a characteristic behavior where all curves follow the same (critical) solution when going from high to low momenta until `forced' to freeze out in the infrared to the value of the boundary condition. The boundary condition can be interpreted in terms of the Gribov gauge-fixing ambiguity; we also demonstrate that this is not connected to the renormalization. Further, the connection to the temporal gluon propagator and the infrared slavery picture of confinement is discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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